Structural block



FIG. 1 is a top, front, and left side isometric view of the structural block of the invention;

FIG. 2 is a top view of the structural block;

FIG. 3 is a front view of the structural block;

FIG. 4 is a left side view of the structural block;

FIG. 5 is a right side view of the structural block;

FIG. 6 is a bottom view of the structural block;

FIG. 7 is a top, front and left side isometric view of an alternate embodiment of the structural block of the invention;

FIG. 8 is a top view of the alternate embodiment shown in FIG. 7;

FIG. 9 is a front view of the alternate embodiment shown in FIG. 7;

FIG. 10 is a left side view of the alternate embodiment shown in FIG. 7;

FIG. 11 is a right side view of the alternate embodiment shown in FIG. 7; and,

FIG. 12 is a bottom view of the alternate embodiment shown in FIG. 7. 

The ornamental design for a structural block, as shown. 